<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
</head>
<body>
  <div id="app">
    <h1>简单计算器</h1>
    <div>
      <span>数值A:</span>
      <span>
        <input type="text">
      </span>
    </div>
    <div>
      <span>数值B:</span>
      <span>
        <input type="text">
      </span>
    </div>
    <div>
      <button>计算</button>
    </div>
    <div>
      <span>计算结果:</span>
      <span></span>
    </div>
  </div>
  <script type="text/javascript" src="js/vue.js"></script>
  <script type="text/javascript">
    
  </script>
</body>
</html>
